Show HN: Respawn – an undo button for AI agents (Rust, local-first, no cloud)

Category: devtools

Tags: snapshots, content-addressed-storage, ai-agents, rust, local-first, undo, noise-protocol

Score: 7.5/10 (Innovation: 7, Technical: 9, Documentation: 8, Utility: 6)

Respawn is a Rust-based, local-first snapshot and undo system for directory trees, designed to wrap AI agents with guarded execution and reversible writes. It combines FastCDC content-defined chunking, BLAKE3-addressed objects, ed25519-signed anchors, Noise-encrypted LAN replication, and tamper-evident audit logs into a coherent primitive called 'undo as infrastructure'. The honesty about cryptographic and filesystem limits is unusual and valuable for an agent-era tool.

Target audience: backend devs, devops, AI/agent tooling engineers, security-conscious developers

Repository: https://github.com/savageAZfck/respawn · Rust · NOASSERTION · 2 stars

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